The Rise and Fall of the Dinosaurs: A New History of a Lost World: The Definitive Dinosaur Encyclopedia with Stunning Illustrations, Embark on a Prehistoric Quest!

by Steve Brusatte

Bone crunching is not normal—some mammals, like hyenas, do it, but most modern reptiles do not. As far as we know, big tyrannosaurs like T. rex were the only dinosaurs capable of it.